Math Graphing 1.0

Graph and interact with your Math formulas!

"Math Graphing" is a unique 1D graphing calculator to graph mathematical expressions of arbitrary complexity. "Math Graphing" can help students improve their math skills by developing some visual intuition of mathematical expressions or advanced users who need some scientific capabilities only available with desktop software like Matlab or Mathematica.

Just a few of "Math Graphing" functionalities:
- Formula graphs can be saved to the devices Photos Album, or the formulas be exported through email with embedded graphs.
- A list of favorite formulas can be also stored for later editing or archival purposes.
- Multiple expressions with quasi-unlimited number of variables can be combined to produce simple or complex formulas.
- Several formulas can be plotted simultaneously in different colors and styles.
- Interactive sliders can be created to visually investigate the role of important parameters on the graphical representation of the formulas.

Example:

# Gabor function
x = 0:1:100
sigma = 1:50; freq = 0:0.1; phase = 0:180
u = cos(2*pi*(x-50)*freq+phase*pi/180)
v = e^(-((x-50)^2)/(2*sigma^2))
y = u*v
plot(u,lr)
plot(v,lg)
plot(y,lw)

Here are tips to get you started:

1) To modify the formula, simply touch its mathematical expression to edit it: both standard and custom keyboards are available to provide maximum flexibility. If a syntax error occurs, the background turns red and back to white once the syntax has been corrected.

2) To visualize the modified formula, press the "Update" button. If an error occurred during the expression evaluation, an alert explains the problem and proposes to return to the editing mode. The graph view supports portrait and landscape modes.

3) Use standard touch gestures to manipulate the graph: pinch to zoom, drag to move the graph, shake to scale the graphs to the y-axis.

4) Double tap the graph to access the interactive sliders. Tap once to return to the gesture mode.

5) Press the "info" button in the main panel to access the Settings and Help sections: Settings allow the customization of the default graphing properties and the size of emailed images. The Help section provides a description of all available mathematical operators and functions.

"Math Graphing" offers export and favorites capabilities:

- To export a graph to your Photos Album or email the formula, simply double tap the graph preview and select one of the buttons at the bottom of the overlay. Exported images to the photo album can contain an inset with the formula, and current or favorite formulas can be emailed.

- To manage your formula favorites, press the "Favorites" button: then, to create a new empty formula, press the + button; to duplicate a formula, select its name and provide a new name; to replace the "Default" formula with a favorite, press the small preview icon on the left; to remove, rename, or reorder any favorite formula, press the "Edit" button.

- To return to the main panel and visualize any favorite formula, press its blue disclosure button.

Please visit our "Math Graphing" web page (http://iphone.kybervision.com/mathgraphing/) to learn more about "Math Graphing"!

About KyberVision: we provide consulting, research and development services in Vision Sciences. We also develop vision-related applications for the iPhone/iPod Touch platform, that are spin-off products of Psykinematix, our Mac OS X flagship product in the field of Visual Psychophysics. Feel free to subscribe to our newsletter at http://iphone.kybervision.com.